CN102832634B - Combined type power stabilizing system based on super-capacitor and high-capacity energy storing device - Google Patents
Combined type power stabilizing system based on super-capacitor and high-capacity energy storing device Download PDFInfo
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- CN102832634B CN102832634B CN201210310971.7A CN201210310971A CN102832634B CN 102832634 B CN102832634 B CN 102832634B CN 201210310971 A CN201210310971 A CN 201210310971A CN 102832634 B CN102832634 B CN 102832634B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention discloses a combined type power stabilizing system based on a super-capacitor and a high-capacity energy storing device in the field of power stabilizing system design. The technical scheme includes that the combined type power stabilizing system based on the super-capacitor and the high-capacity energy storing device comprises a super-capacitance energy storing device, the high-capacity energy storing device and a wind field output power detection unit, wherein the wind field output power detection unit is respectively connected with a wind field and a power grid, the super-capacitance energy storing device is communicated with a wind-driven generator and is connected with the power grid through the wind field output power detection unit, and the high-capacity energy storing device is communicated with the wind-driven generator and is connected with the power grid through the wind field output power detection unit. The combined type power stabilizing system has the advantages that wind energy is stored in an atmospheric pressure energy form, the super-capacitor is used for coordinated control, the problem of large wind power fluctuation is solved, and economic benefit of the combined type power stabilizing system is greatly improved.
Description
Technical field
The invention belongs to power and stabilize systems design area, particularly relate to a kind of composite type power based on super capacitor and Large Copacity energy storage device and stabilize system.
Background technology
Wind-powered electricity generation has become that generally acknowledge can the clean energy resource of large-scale development now, reduce electrical network carbon discharge capacity, must greatly develop wind-powered electricity generation.But the feature of wind power generation is intermittent and unsteadiness, for ensureing effective utilization of wind energy resources, be provided with Large Copacity energy storage device in wind field to store wind-powered electricity generation.Wind power generation be subject to the impact of wind speed and rapid fluctuations time, Large Copacity energy storage device obviously cannot complete the effect of quick adjustment, can not reach the requirement of stabilizing fluctuation, and then affects the quality of power supply of electrical network, causes harmonic pollution.In wind field, install super capacitor energy storage device additional and Large Copacity energy storage device jointly controls, the effect of stabilizing wind field power output can be realized, make wind field power output can with the change quick adjustment of grid power.
The energy storage control technology of wind power generation is the technology had a bright future, and wind electricity volatility is large and have anti-peak-shaving capability, and the anti-peak-shaving capability of wind-powered electricity generation is embodied in: load boom period by day, and wind speed is relatively little, and wind power generation is relatively less; In the load valley phase at night, wind speed is relatively high, and wind power generation is relatively many.So in energy storage at night, daytime, generating just can change this present situation, realized effective utilization of wind-powered electricity generation.
Now, there is various wind-powered electricity generation energy storage device, such as: pumped storage, compressed-air energy storage, Power Flow etc., these energy storage methods well solve the problem of resource waste that the anti-peak-shaving capability of wind-powered electricity generation brings, but these Large Copacity energy storage devices on the adjustment of wind power by wind energy intermittent and spatial distribution unbalanced affect very large, and can not realize stabilizing power fast, the fluctuation of wind-powered electricity generation does not still effectively solve, although there is the scheme that wind field utilizes super capacitor energy-storage completely, but it is with high costs, really cannot be applied to reality, the biggest obstacle of wind-electricity integration still exists.The composite type power of super capacitor in this paper and Large Copacity energy storage device is stabilized system and can well be solved this problem that wind-resources is wasted and power fluctuation is large, and use the super capacitor energy storage device of low capacity, reduce costs, thus solve wind-electricity integration problem, reduce electrical network carbon emission.
Summary of the invention
The present invention is directed to the anti-peak-shaving capability of wind power generation, rapid fluctuations and power prediction error characteristics, propose a kind of composite type power based on super capacitor and Large Copacity energy storage device and stabilize system.
Technical scheme of the present invention is, a kind of composite type power based on super capacitor and Large Copacity energy storage device stabilizes system, it is characterized in that, described system comprises super capacitor energy storage device, Large Copacity energy storage device and wind field power output detecting unit;
Wherein, described wind field power output detecting unit is connected with wind energy turbine set and electrical network respectively, for detecting the power output of wind energy turbine set;
Described super capacitor energy storage device is connected with blower fan and is connected with electrical network, for stabilizing wind-powered electricity generation minor swing by described wind field power output detecting unit;
Described Large Copacity energy storage device is connected with blower fan and is connected with electrical network, for bearing the power difference between wind field and electrical network by described wind field power output detecting unit.
Described super capacitor energy storage device comprises pulse width modulation (PWM) current transformer, buck-boost chopper circuit and super electric capacity energy storage means and electric quantity monitoring unit.
Described Large Copacity energy storage device, comprises gas storage well, the first valve, high-pressure pump, the second valve, the 3rd valve, the 4th valve, upper sump, the hydraulic turbine, lower sump, high-pressure hydraulic pump and gas generator; Described gas storage well is connected with described first valve and the second valve respectively; Described first valve is connected with described high-pressure pump; Described high-pressure pump is connected with described 3rd valve and the 4th valve respectively; Described 3rd valve is connected with described gas generator; Described 4th valve is connected with described upper sump; Described upper sump is connected respectively by the hydraulic turbine and high-pressure hydraulic pump with lower sump.
Described Large Copacity energy storage device comprises two kinds of operational modes; Described operational mode comprises warm standby mode and cold standby mode.
Described pulse width modulation (PWM) current transformer comprises two kinds of running statuses; Described state comprises inverter mode and rectification state.
Beneficial effect of the present invention comprises following several respects:
1, wind energy stores with the form of air pressure energy by the present invention, coordinates control with super capacitor, solves the problem that wind power fluctuation is large, waste, improves economic benefit of the present invention significantly.
2, energy storage device and the box-like power of super-capacitor device package group are stabilized system by the present invention, as the supporting enforcement of wind field, generate electricity and can surf the Net according to wind-powered electricity generation price, improve the economic benefit of wind field, and the electric energy that can reduce storage station consumes and loss in a large number, the supply load being conducive to improving electrical network maintains maintenance level, improves power supply quality.
3, the present invention uses low capacity super capacitor, and capacitive part only bears the effect of stabilizing power fluctuation fast, can reduce the manufacturing cost of equipment significantly.
4, the present invention can realize installing on the spot and burying, and does not need specifically potential condition, reduces construction difficulty, reduces construction cost.
Accompanying drawing explanation
Fig. 1 is that a kind of composite type power based on super capacitor and Large Copacity energy storage device provided by the invention stabilizes systematic difference structural representation;
Fig. 2 is the Large Copacity energy storage device structure figure that a kind of composite type power based on super capacitor and Large Copacity energy storage device provided by the invention stabilizes system;
Fig. 3 is the super capacitor energy storage device structural representation that a kind of composite type power based on super capacitor and Large Copacity energy storage device provided by the invention stabilizes system;
Fig. 4 is the workflow diagram that a kind of composite type power based on super capacitor and Large Copacity energy storage device provided by the invention stabilizes system; Wherein, the workflow diagram that (a) is super capacitor energy storage device is schemed; The workflow diagram that figure (b) is Large Copacity energy storage device;
Wherein, 1-blower fan; 2-super capacitor energy storage device; 3-Large Copacity energy storage device; 4-wind field power output detecting unit; 5-electrical network; 6-gas storage well; 7-first valve; 8-high-pressure pump; 9-second valve; 10-the 3rd valve; 11-the 4th valve; The upper sump of 12-; The 13-hydraulic turbine; Sump under 14-; 15-high-pressure hydraulic pump; 16-gas generator; 17-pulse width modulation (PWM) current transformer; 18-buck-boost chopper circuit; 19-super electric capacity energy storage means; 20-electric quantity monitoring unit.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment is elaborated.It should be emphasized that following explanation is only exemplary, instead of in order to limit the scope of the invention and apply.
Fig. 1 is that a kind of composite type power based on super capacitor and Large Copacity energy storage device provided by the invention stabilizes systematic difference structural representation.In Fig. 1, a kind of composite type power based on super capacitor and Large Copacity energy storage device is stabilized system and is comprised super capacitor energy storage device, Large Copacity energy storage device and wind field power output detecting unit; Described wind field power output detecting unit is connected with wind energy turbine set and electrical network respectively; Described super capacitor energy storage device is connected with blower fan and electrical network respectively as the inner facility of wind energy turbine set; Described Large Copacity energy storage device is connected with blower fan and electrical network respectively as the inner facility of wind energy turbine set.
Fig. 2 is the Large Copacity energy storage device structure figure that a kind of composite type power based on super capacitor and Large Copacity energy storage device provided by the invention stabilizes system.Fig. 2 is for virtual discrepancy in elevation pumped storage device, and Large Copacity energy storage device comprises gas storage well, the first valve, high-pressure pump, the second valve, the 3rd valve, the 4th valve, upper sump, the hydraulic turbine, lower sump, high-pressure hydraulic pump and gas generator; Described gas storage well is connected with described first valve and the second valve respectively; Described first valve is connected with described high-pressure pump; Described high-pressure pump is connected with described 3rd valve and the 4th valve respectively; Described 3rd valve is connected with described gas generator; Described 4th valve is connected with described upper sump; Described upper sump is connected respectively by the hydraulic turbine and high-pressure hydraulic pump with lower sump.
Fig. 3 is the super capacitor energy storage device structural representation that a kind of composite type power based on super capacitor and Large Copacity energy storage device provided by the invention stabilizes system.Described super capacitor energy storage device comprises pulse width modulation (PWM) current transformer, buck-boost chopper circuit, super electric capacity energy storage means and electric quantity monitoring unit.
Fig. 4 is the workflow diagram that a kind of composite type power based on super capacitor and Large Copacity energy storage device provided by the invention stabilizes system; Wherein, the workflow diagram that (a) is super capacitor energy storage device is schemed; The workflow diagram that figure (b) is Large Copacity energy storage device.
In figure (a), detailed process comprises following two kinds of situations:
A: during Power Output for Wind Power Field lower limit value given lower than electrical network
When wind field power output detecting unit 4 monitors Power Output for Wind Power Field lower than electrical network 5 given power, transmitted power adjustment order is to super capacitor energy storage device 2.Super capacitor energy storage device 2, according to the difference rapid adjustment charge/discharge power between Power Output for Wind Power Field and the given power of electrical network, is heightened discharge power or reduces charge power.Pulse width modulation (PWM) current transformer 17 is in inversion/rectification state respectively according to the operating state of super capacitor energy storage device, buck-boost chopper circuit controls super capacitor charge/discharge, and make direct voltage keep constant, charge/discharge when super electric capacity energy storage means 19 carries out few.
B: during Power Output for Wind Power Field power upper limit value given higher than electrical network
When wind field power output detecting unit 4 monitors Power Output for Wind Power Field power given higher than electrical network, adjust order to super capacitor energy storage device 2 by power detecting unit engine power.Super capacitor energy storage device 2 is according to the difference rapid adjustment charge/discharge power between Power Output for Wind Power Field and the given power of electrical network.Heighten charge power or reduce generated output, pulse width modulation (PWM) current transformer 17 is in rectification/inverter mode respectively according to the operating state of super capacitor energy storage device, buck-boost chopper circuit controls super capacitor charge/discharge, and make direct voltage keep constant, charge/discharge when super electric capacity energy storage means 19 carries out few.
In figure (b), detailed process comprises following four kinds of situations:
A: when electricity in super electric capacity energy storage means reaches lower threshold and Large Copacity energy storage device does not start time:
Reach lower threshold when electric quantity monitoring unit 20 monitors dump energy in super electric capacity energy storage means 19, and when Large Copacity energy storage device 3 is in cold standby, sends order to Large Copacity energy storage device 3, make Large Copacity energy storage device 3 generate electricity.Second valve 9 is opened, first valve 7, the 3rd valve 10 and the 4th valve 11 close, gas in gas storage well 6 forces the water in sump 12 to flow to lower sump 14 via the hydraulic turbine 13, now the hydraulic turbine 13 generates electricity, generated output is set by the average power in super capacitor energy storage device 2 discharge process, makes up wind energy turbine set and exports the difference between the given power of electrical network and the electricity in super electric capacity energy storage means 19 is returned in normal range (NR).
B: when electricity in super electric capacity energy storage means reaches lower threshold and Large Copacity energy storage device starts time:
Lower threshold is reached when electric quantity monitoring unit 20 monitors dump energy in super electric capacity energy storage means 19, and when Large Copacity energy storage device 3 is in stand-by heat, order is sent to Large Copacity energy storage device 3, Large Copacity energy storage device 3 is made to make generated output adjustment, namely the hydraulic turbine 13 carries out generated output adjustment, generated output variable quantity is set by the average power in super capacitor energy storage device 2 discharge process, makes up wind energy turbine set and exports the difference between the given power of electrical network and the electricity in super electric capacity energy storage means 19 is returned in normal range (NR).
C: when electricity in super electric capacity energy storage means reaches upper limit threshold and Large Copacity energy storage device does not start time:
Equivalent monitoring means 20 monitors dump energy in super electric capacity energy storage means 19 and reaches upper limit threshold, and when Large Copacity energy storage device 3 is in cold standby, order is sent to Large Copacity energy storage device 3, make Large Copacity energy storage device 3 energy storage, second valve 9 is opened, first valve 7, the 3rd valve 10 and the 4th valve 11 close, motor drives gas generator 16 to operate, water in lower sump 14 is drawn in upper sump 12, along with the rising of upper sump 12 middle water level, gas constantly enters into gas storage well 6, forces the pressure in gas storage well 6 to raise gradually.Electric energy conversion is just that air pressure energy stores by this process, energy storage power is set by the average power in super capacitor energy storage device in Fig. 12 thermal energy storage process, and make the electricity in super electric capacity energy storage means 19 return in normal range (NR), realize power storage process.
D: when electricity in super electric capacity energy storage means reaches upper limit threshold and Large Copacity energy storage device starts time:
Equivalent monitoring means 20 monitors dump energy in super electric capacity energy storage means 19 and reaches upper limit threshold, and when Large Copacity energy storage device 3 is in stand-by heat, order is sent to Large Copacity energy storage device 3, Large Copacity energy storage device 3 is made to make energy storage/generated output adjustment, namely gas generator 16 hydraulic turbine 13 carries out energy storage/generated output adjustment, energy storage power or power variation are set by the average power in super capacitor energy storage device 2 thermal energy storage process, by because wind speed strengthens, the electric energy produced higher than grid power stores, and make the electricity in super electric capacity energy storage means 19 return in normal range (NR), realize power storage process.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (1)
1. stabilize system based on the composite type power of super capacitor and Large Copacity energy storage device for one kind, described system comprises super capacitor energy storage device, Large Copacity energy storage device and wind field power output detecting unit, wind field power output detecting unit is connected with wind energy turbine set and electrical network respectively, for detecting the power output of wind energy turbine set; Described Large Copacity energy storage device is connected with blower fan and is connected with electrical network, for bearing the power difference between wind field and electrical network by described wind field power output detecting unit; The operational mode of described Large Copacity energy storage device comprises warm standby mode and cold standby mode; It is characterized in that, described wind field power output detecting unit (4) is when monitoring Power Output for Wind Power Field lower than electrical network (5) given power, transmitted power adjustment order is to super capacitor energy storage device (2), super capacitor energy storage device (2), according to the difference rapid adjustment charge/discharge power between Power Output for Wind Power Field and the given power of electrical network, is heightened discharge power or reduces charge power; Pulse width modulation (PWM) current transformer (17) is in inversion/rectification state respectively according to the operating state of super capacitor energy storage device, buck-boost chopper circuit controls super capacitor charge/discharge, and make direct voltage keep constant, charge/discharge when super electric capacity energy storage means (19) carries out few;
Secondly, when described wind field power output unit (4) monitors Power Output for Wind Power Field power given higher than electrical network, order is adjusted to super capacitor energy storage device (2) by power detecting unit engine power, super capacitor energy storage device (2), according to the difference rapid adjustment charge/discharge power between Power Output for Wind Power Field and the given power of electrical network, is heightened charge power or reduces generated output; Pulse width modulation (PWM) current transformer (17) is in rectification/inverter mode respectively according to the operating state of super capacitor energy storage device, buck-boost chopper circuit controls super capacitor charge/discharge, and make direct voltage keep constant, charge/discharge when super electric capacity energy storage means (19) carries out few.
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| CN103457281B (en) * | 2013-05-21 | 2016-04-20 | 国家电网公司 | A kind of super capacitor energy-storage system participates in the control method for coordinating of electric power primary frequency modulation |
| CN108869059B (en) * | 2018-06-26 | 2020-06-02 | 广东电网有限责任公司 | Cold standby compensation calculation method, device, equipment and storage medium for gas unit |
| CN112639509B (en) * | 2019-03-28 | 2021-11-09 | 华为技术有限公司 | Radar power control method and device |
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| CN201774266U (en) * | 2010-08-10 | 2011-03-23 | 北京国电富通科技发展有限责任公司 | Energy-storage control system |
| CA2729776A1 (en) * | 2010-11-25 | 2012-05-25 | Mitsubishi Heavy Industries, Ltd. | Output control method and output control unit for wind power plant |
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| PL217936B1 (en) * | 2010-05-04 | 2014-09-30 | Waldemar Piskorz | Hydro-air power plant |
| CN202167861U (en) * | 2011-08-15 | 2012-03-14 | 沈阳工业大学 | Wind power generation energy storage device based on gray model control |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201774266U (en) * | 2010-08-10 | 2011-03-23 | 北京国电富通科技发展有限责任公司 | Energy-storage control system |
| CA2729776A1 (en) * | 2010-11-25 | 2012-05-25 | Mitsubishi Heavy Industries, Ltd. | Output control method and output control unit for wind power plant |
Non-Patent Citations (1)
| Title |
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| 储能技术在风力发电中的应用;杨苹等;《***科学与数学》;20120430;第32卷(第4期);第410-416页 * |
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